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12761692831 is a prime number
BaseRepresentation
bin10111110001010011…
…11111101010011111
31012221101101011111001
423320221333222133
5202113443132311
65510155211131
7631150412356
oct137051775237
935841334431
1012761692831
115459708788
122581a46aa7
131284bc4544
14890c5499d
154ea57c4c1
hex2f8a7fa9f

12761692831 has 2 divisors, whose sum is σ = 12761692832. Its totient is φ = 12761692830.

The previous prime is 12761692789. The next prime is 12761692849. The reversal of 12761692831 is 13829616721.

It is a strong prime.

It is an emirp because it is prime and its reverse (13829616721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12761692831 - 221 = 12759595679 is a prime.

It is a super-2 number, since 2×127616928312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12761693831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6380846415 + 6380846416.

It is an arithmetic number, because the mean of its divisors is an integer number (6380846416).

Almost surely, 212761692831 is an apocalyptic number.

12761692831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12761692831 is an equidigital number, since it uses as much as digits as its factorization.

12761692831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The spelling of 12761692831 in words is "twelve billion, seven hundred sixty-one million, six hundred ninety-two thousand, eight hundred thirty-one".